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