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