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