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