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