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