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)(11,14)(12,16)(13,15)(17,18,22,23)(19,27,28,24)(20,25,29,32)(21,26,31,30)(2,6)(7,8)(9,11,13,12)(10,14,15,16)(18,23)(19,24)(21,30)(25,32)(26,31)(27,28)(1,3,5,4)(2,7,6,8)(10,15)(14,16)(17,19)(18,24)(20,26)(21,25)(22,28)(23,27)(29,30)(31,32)(9,12,13,11)(10,16,15,14)(17,20,22,29)(18,25,23,32)(19,21,28,31)(24,30,27,26)(1,4,5,3)(2,8,6,7)(17,21,22,31)(18,26,23,30)(19,25,28,32)(20,27,29,24)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.