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