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