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