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