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