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