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