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