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