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