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