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