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