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