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