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