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)(20,21)(22,24)(27,31)(29,32)(1,3)(2,6)(4,7)(5,8)(9,11,14,12)(10,15,16,13)(17,19,21,24)(18,22,20,23)(25,26,28,30)(27,29,31,32)(3,8)(6,7)(10,16)(11,12)(17,18,21,20)(19,23,24,22)(25,26)(27,29)(28,30)(31,32)(1,3)(2,7)(4,6)(5,8)(9,12,14,11)(10,15,16,13)(17,20,21,18)(19,23,24,22)(25,27)(26,29)(28,31)(30,32)(1,4,5,2)(3,7,8,6)(9,13,14,15)(10,11,16,12)(17,19)(18,23)(20,22)(21,24)(25,27)(26,29)(28,31)(30,32)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.