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