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