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