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