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