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