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