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