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