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