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