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