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