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