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