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