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