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