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