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