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