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