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