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