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