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