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