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