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