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