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