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