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