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