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)(17,18,21,22)(19,23,25,28)(20,24,27,29)(26,30,31,32)(1,2)(3,5)(4,6)(7,8)(9,11)(10,13)(12,15)(14,16)(18,22)(23,28)(24,29)(30,32) involution — undirected(1,3,4,8)(2,5,6,7)(10,14)(11,15)(17,19,21,25)(18,23,22,28)(20,26,27,31)(24,30,29,32)(2,6)(5,7)(11,15)(13,16)(18,22)(19,25)(24,29)(26,31) involution — undirected(18,22)(23,28)(24,29)(30,32) involution — undirected(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)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.