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