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