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