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