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