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