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