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