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