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