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