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