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)(21,29)(22,23)(25,32)(26,28)(30,31)(33,34)(3,5)(4,8)(6,13)(7,12)(9,16)(10,11)(14,17)(15,18)(19,20)(21,25)(22,26)(23,28)(24,27)(29,32)(30,33)(31,34) involution — undirected(19,21,24,30)(20,25,27,33)(22,29,23,31)(26,32,28,34)(5,12)(8,11)(13,18)(16,17)(19,22,24,23)(20,26,27,28)(21,29,30,31)(25,32,33,34)(3,6,7,15)(4,9,10,14)(5,13,12,18)(8,16,11,17)(20,27)(25,33)(26,28)(32,34)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.