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