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