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