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