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