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