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