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