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