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