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