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