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