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