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