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