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