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