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