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