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