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