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