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