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