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