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