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