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