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