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