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