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)(11,16)(12,14)(13,15)(17,18,21,22)(19,20,23,24)(27,31)(30,32)(1,2)(3,7)(4,5)(6,8)(9,11,14,13)(10,15,12,16)(17,19,21,23)(18,20,22,24)(26,29)(30,32)(2,5)(6,7)(11,13)(15,16)(18,22)(19,23)(25,26,28,29)(27,30,31,32)(1,2)(3,6)(4,5)(7,8)(9,12,14,10)(11,16,13,15)(17,18)(19,20)(21,22)(23,24)(25,27,28,31)(26,30,29,32)(1,3)(2,6)(4,8)(5,7)(9,13,14,11)(10,15,12,16)(17,20)(18,19)(21,24)(22,23)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.