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