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