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