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