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