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