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