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