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