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)(9,10,13,14)(11,16,15,12)(17,18,21,22)(19,20,23,24)(5,6,7,8)(10,14)(12,16)(18,22)(20,24)(1,2)(3,4)(9,11,13,15)(10,12,14,16)(17,19)(18,20)(21,23)(22,24)(9,12)(10,11)(13,16)(14,15)(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.