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