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