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