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