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