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