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