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