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