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