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