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