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