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