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