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