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