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