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