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