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