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