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)(17,18,23,31,22,25,21,27)(19,28,30,24,29,32,20,26)(1,3)(2,5)(4,8)(6,7)(9,10)(11,13)(12,15)(14,16)(17,19)(18,24)(20,23)(21,30)(22,29)(25,26)(27,32)(28,31) involution — undirected(2,6)(5,7)(9,11,13,10)(12,15,16,14)(18,25)(19,29)(20,30)(27,31)(3,8)(5,7)(10,11)(14,15)(17,20,23,19,22,30,21,29)(18,26,31,28,25,24,27,32)(9,12,13,16)(10,14,11,15)(18,25)(19,29)(20,30)(27,31)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.