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