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