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