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