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