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