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