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