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