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