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