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