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