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