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