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