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