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