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