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