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