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