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