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