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