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)(17,18,22,26)(19,23,29,30)(20,25,21,24)(27,31,28,32)(9,10)(11,14)(12,16)(13,15)(17,19,22,29)(18,23,26,30)(20,31,21,32)(24,27,25,28)(2,6)(7,8)(9,11,13,12)(10,14,15,16)(17,20,18,24,22,21,26,25)(19,27,30,31,29,28,23,32)(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)(17,21,26,24,22,20,18,25)(19,28,23,31,29,27,30,32)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.