In the diagram, each floor of the building is represented by a large, horizontally long rectangle. These rectangles are stacked vertically to represent the building's structure, with the bottom-most rectangle representing the ground floor. Passengers are depicted as smaller rectangles placed on the left side of each floor's rectangle, indicating their current location on that floor. Each elevator type (fast and slow) is represented by smaller rectangles placed on the right side of the floor rectangles in designated columns: one for fast elevators and another for slow elevators. This spatial arrangement ensures that each elevator type's position is clear and distinct.

Colors are used to indicate the status of elevators and passengers. For elevators, three colors are used: green for empty (0 passengers), yellow for partially full (1 passenger for fast elevators, or when a slow elevator has 1 passenger), and red for full capacity (2 passengers for fast elevators). Passengers are represented with a neutral color (e.g., blue) since their status is simply being on a floor.

The legend is placed outside the main diagram area to avoid overlapping with any objects. It provides a clear mapping of colors to elevator statuses, ensuring that viewers can easily interpret the meaning of each color. The text label for each object, including elevators and passengers, is placed inside their respective shapes. The text is kept short and descriptive to ensure readability without cluttering the diagram.

The size of the rectangles for elevators and passengers is smaller than the floor rectangles to maintain a clear hierarchy and ensure visibility. The relative positions of elevators within their designated columns and the passengers on the left side of each floor help convey the spatial arrangement and organization of the building's layout.