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