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)(11,13)(12,14)(15,16)(17,18,22,25,21,24,20,26)(19,27,31,23,28,29,30,32)(1,3)(2,5)(4,8)(6,7)(9,10)(11,15)(12,14)(13,16)(17,19,21,28)(18,23,24,32)(20,31,22,30)(25,27,26,29)(2,6)(5,7)(9,11,12,16)(10,13,14,15)(18,24)(19,28)(25,26)(30,31)(3,8)(5,7)(11,16)(13,15)(17,18,20,26,21,24,22,25)(19,29,30,23,28,27,31,32)(10,14)(13,15)(17,20,21,22)(18,25,24,26)(19,30,28,31)(23,29,32,27)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.