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