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