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