One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4,6,10,7,9,11,17)(5,8,13,15,12,16,14,18)(19,20)(21,24,28,32)(22,29,30,25)(23,26)(27,31)(33,34)(3,5,11,13,7,12,6,14)(4,8,10,18,9,16,17,15)(19,21,23,28)(20,24)(22,27,30,33)(25,31)(26,32)(29,34)(19,22)(20,25)(21,27)(23,30)(24,31)(26,29)(28,33)(32,34) 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.