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