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