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