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