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