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