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