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