One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4,6,10,7,9,15,17)(5,11,12,18,13,8,14,16)(19,20)(21,28,30,33)(22,31)(23,26)(24,27)(25,29,34,32)(3,5,7,13)(4,8,9,11)(6,14,15,12)(10,18,17,16)(19,21)(20,25)(22,29)(23,32)(24,30)(26,33)(27,34)(28,31)(19,22,24,23)(20,26,27,31)(21,29,30,32)(25,33,34,28)(4,9)(8,11)(10,17)(16,18) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.