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