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