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