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