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