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