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