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