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