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)(3,11)(4,8)(5,9)(6,14)(7,10)(12,16)(13,15)(22,28)(29,32) involution — undirected(1,3,5,13)(2,7,9,16)(4,12,14,10)(6,15,8,11)(17,19)(18,22)(20,25)(21,26)(23,29)(24,28)(27,31)(30,32)(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.