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