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