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