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