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