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