There was an article in one of those annuals that used to appear every Christmas, but I am am talking a long time ago, circa 1964. Trains Illustrated, Railway World, something like that. I recall it definitely had a full track plan in it. (By the way, you would need an awful lot of points.)
I still have that book somewhere, but I really am not sure where. Maybe someone else can provide the full reference.
Failing that, the Lancashire and Yorkshire Railway Society might be a good bet. I'm pretty sure they have published a book on Victoria, but whether it has the desired track plan I couldn't say.