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