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