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