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