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