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