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