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