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