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)(19,20)(21,22)(23,24)(26,31)(28,29)(1,2)(3,7)(4,8)(5,6)(10,15)(11,12)(18,22)(20,23)(25,26)(27,28)(29,32)(30,31) involution — undirected(9,11,14,12)(10,16,15,13)(17,19)(18,23)(20,22)(21,24)(25,27,30,32)(26,28,31,29)(1,3,5,8)(2,7,6,4)(9,12,14,11)(10,13,15,16)(17,20,21,23)(18,19,22,24)(25,28,30,29)(26,27,31,32)(1,4,5,7)(2,8,6,3)(9,13)(10,11)(12,15)(14,16)(17,19)(18,23)(20,22)(21,24)(25,29,30,28)(26,32,31,27)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.