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