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