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