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