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