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