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