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