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