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