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