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