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