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