make it more visually appealing and navigable (perhaps by publishing just the .dot file and using something like dagre-d3 to visualise it)
break it up into a map per page, so you get a local map, too. To be seen whether this is a useful sensemaking aid or not. Maybe it would just be another useful navigational aid. (by making use of org-roam’s function for publishing a graph just for the current page)