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