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