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