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)(8,19)(11,21)(13,29,30,25)(14,24,20,23)(17,28,31,22)(18,27)(26,32)(1,3)(2,7)(4,17)(5,20)(6,15)(8,25)(9,24)(10,12)(11,23)(13,19)(14,21)(16,22)(18,31)(26,29)(27,28)(30,32) involution — undirected(1,4,5,19,6,18,21,32)(2,8,11,16,10,26,9,27)(3,13,14,17,15,30,20,31)(7,22,24,25,12,28,23,29)(2,9,10,11)(4,18)(7,23,12,24)(8,16,26,27)(13,30)(17,31)(19,32)(22,25,28,29)(1,3)(2,7)(4,13)(5,14)(6,15)(8,22)(9,23)(10,12)(11,24)(16,25)(17,19)(18,30)(20,21)(26,28)(27,29)(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.