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