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