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