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