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