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