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