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