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