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