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