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