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