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)(17,18)(19,22)(20,23)(21,25)(24,29)(26,30)(27,32)(28,31)(1,3)(2,6)(4,13)(5,10)(7,16)(8,15)(9,12)(11,14)(17,19,21,27)(18,22,25,32)(20,28,29,26)(23,31,24,30)(4,14)(6,15)(7,12)(11,13)(18,23)(20,29)(22,30)(24,25)(26,28)(31,32) involution — undirected(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.