An approach is provided that visually distinguishes between entity types in a communication system. A Data store with entities is queried, with entities connected to one another as senders and receivers, resulting in a query result. A node data structure corresponding to each of the entities is created and an edge data structure corresponding to each of the connections between the entities is also created. Nodes corresponding to the node data structures are displayed, along with edges (e.g., connection lines) corresponding to the edge data structures. A user selects one of the nodes that is displayed, and the selected node is visually highlighted. Different types of non-selected nodes are identified based on the selected node. Types of nodes may include sender type nodes, receiver type nodes, and sender/receiver type nodes. The types of identified nodes are highlighted in a manner that visually distinguishes each type from the other types.