Thanks for the question. There is a section in Chapter 3 on visualizing graphs using the DOT serializer in libgraph and then working on these with GraphViz, or drawing tools such as OmniGraffle or GraphVizio.
But to your point there is nothing specifically for the front end.
The main focus in the book is querying different graph models from Elixir and sharing data across these models. There simply wasn’t enough space to deal with graph algorithms or visualizations, important subjects as these are.