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