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