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