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