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