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