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