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