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