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