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)(19,20,23,28)(21,29,31,25)(22,27,24,26)(30,34,32,33)(3,5,7,13)(4,8,10,11)(6,12,14,18)(9,15,16,17)(19,21,23,31)(20,25,28,29)(22,30,24,32)(26,34,27,33)(3,6)(4,9)(5,12)(7,14)(8,15)(10,16)(11,17)(13,18)(20,26)(22,24)(25,33)(27,28)(29,34)(30,32) involution — undirected(6,14)(9,16)(12,18)(15,17)(19,22,23,24)(20,27,28,26)(21,30,31,32)(25,33,29,34)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.