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