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