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