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