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