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