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