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