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