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