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