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