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