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