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