Display system, display method, and display program

The display system according to the present invention is provided in a production facility that produces a product and has, as constituent elements, at least one drive means for driving the production facility and at least one monitoring means for monitoring the production, the display system comprising: a control unit; a display unit; and a storage unit that stores, as a causal relationship model, the relationship between two or more of the plurality of constituent elements with respect to an abnormality that may occur in the production facility, and that controls, on the basis of the causal relationship model, the relationship between the two or more constituent elements from among the plurality of constituent elements. The display unit displays a model graph having nodes corresponding to the constituent elements and edges connecting the nodes, and displays the model graph in accordance with a request from a user by either a first mode in which all the nodes are displayed, or a second mode in which all the