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