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