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