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