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