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