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