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