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