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