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