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