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