I did a similar visualization but for road network paths:

uni-directional A* https://karussell.files.wordpress.com/2012/07/astar.gif (New version: https://www.graphhopper.com/wp-content/uploads/2017/07/astar...)

bi-directional Dijkstra https://karussell.files.wordpress.com/2012/06/bidijkstra.gif

This uses a primitive Swing UI https://github.com/graphhopper/graphhopper/blob/master/tools...

And it can be color encoded too https://www.graphhopper.com/blog/2016/01/19/alternative-road... which is inspired from others: https://www.graphhopper.com/blog/2015/12/14/roads-to-rome-fr...

Or here I used Deck.gl with time-dependent data: https://www.graphhopper.com/blog/2018/07/04/high-precision-r...