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