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