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