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