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