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