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