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