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