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