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