I wrote this Chrome "Side Panel" extension that listens for GraphQL results on visited websites. When found, that data is transformed into a network graph using vis.js. Originally designed as the missing graph visualization tool for Apollo Studio, Graffy can reveal interesting networks returned by all sorts of sites that use GraphQL.
Link on the Chrome Extension Store: https://chromewebstore.google.com/detail/graffy/hpbbfdcfeinlpdhhjanfhkadiccofeif
For more information of using Graffy, see its README on github: https://github.com/matthewmcneely/graffy