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