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