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