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