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