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