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