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