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