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