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