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