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