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