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