It might be worth merging and raising visibility with this issue, too: Global graph view: open with currently active note highlighted Yes, It states the “global” graph, but at the time of the request, the local graph didn’t exist.
Ultimately, it sounds like we all want the same thing: visibility of the active note in the graph view. A lot of the suggestions here would address all 3 requests. I love the idea of having a group query for the active note, but would settle for a CSS override if that were easier for devs to implement.
Recently, I’ve been thinking of this request with a geographic metaphor: think of each note as an address, the local graph is like a map of the city, and the global graph, well, a globe. It would be very useful to have that address marked on the local map and the globe. Who doesn’t love a “you are here” marker to orient themselves?
Compared to when the linked request was first made, there’s a number of features that make this request seem very close. 
Hopefully, these requests together can get more visibility and make it happen.