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