One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,7,8,6)(9,10)(11,15)(12,16)(13,14)(17,18)(19,21)(20,22)(23,24)(25,26,30,32)(27,31,28,29)(2,5)(6,7)(10,14)(11,16)(17,18)(19,21)(20,23)(22,24)(25,27,30,28)(26,29,32,31)(2,5)(6,7)(11,16)(12,15)(18,19)(22,23)(27,28)(29,31) involution — undirected(1,3)(2,6)(4,8)(5,7)(9,11,13,16)(10,15,14,12)(17,19,21,18)(20,23,24,22)(25,28,30,27)(26,31,32,29)(1,2)(3,6)(4,5)(7,8)(9,12,13,15)(10,16,14,11)(17,20,21,24)(18,22,19,23)(25,29,30,31)(26,27,32,28)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.