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