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