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