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)(19,24)(20,22)(21,23)(25,28)(26,29)(27,30)(31,32)(1,3,5,2,6,9,10,7)(4,11,13,8,12,15,16,14)(18,22)(23,25)(24,29)(30,31)(2,7)(3,9)(8,14)(11,15)(18,23)(21,28)(22,25)(24,30)(27,32)(29,31) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,19)(18,24)(20,26)(21,27)(22,29)(23,30)(25,31)(28,32) involution — undirected(4,12)(8,14)(11,15)(13,16)(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.