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