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