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