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