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