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