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)(11,12)(13,15)(14,16)(17,18,20,23)(19,22,24,21)(25,26)(27,31)(28,32)(29,30)(9,11,13,16)(10,14,15,12)(17,19)(18,21)(20,24)(22,23)(25,27,29,32)(26,28,30,31)(10,15)(12,14)(17,19,20,24)(18,22,23,21)(25,26,29,30)(27,31,32,28)(1,3,5,8)(2,6,4,7)(9,12)(10,11)(13,14)(15,16)(17,19)(18,22)(20,24)(21,23)(25,26)(27,28)(29,30)(31,32)(1,4,5,2)(3,7,8,6)(9,11)(10,12)(13,16)(14,15)(17,18)(19,22)(20,23)(21,24)(25,28)(26,27)(29,31)(30,32)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.