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