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