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