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