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)(17,18,20,24,21,25,22,26)(19,27,30,31,28,23,29,32)(1,3,4,8)(2,5,6,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,23)(20,30)(21,28)(22,29)(24,32)(25,27)(26,31)(9,11,12,16)(10,13,14,15)(18,24)(19,28)(20,22)(23,31)(25,26)(27,32)(3,8)(5,7)(11,16)(13,15)(17,20,21,22)(18,24,25,26)(19,29,28,30)(23,31,27,32)(10,14)(13,15)(18,25)(19,28)(24,26)(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.