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