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