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