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