Customise the Diagram Report using more entities

This Diagram Report is a very good way of visualise the relationship between entities.  I would like to do this on Demand => Epics => User stories (US) => Sprints for stakeholders to understand that some Epics will take more than one Sprint to deliver (very important if working in a waterfall company) and one demand needed to be split into or have dependencies on more than one Epic / US.