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