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