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