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