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