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