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