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)(19,24,29,28)(20,30,21,25)(26,27,32,31)(1,3)(2,5)(4,8)(6,7)(9,11,13,12)(10,14,15,16)(17,19,22,29)(18,24,23,28)(20,27,21,31)(25,26,30,32)(9,12,13,11)(10,14,15,16)(17,20,22,21)(18,25,23,30)(19,26,29,32)(24,31,28,27)(2,6)(5,7)(17,21,22,20)(18,25,23,30)(19,27,29,31)(24,32,28,26)(3,8)(5,7)(18,23)(19,28)(24,29)(25,30)(26,27)(31,32) 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.