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