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