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