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