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