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