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