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