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