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