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