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