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