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)(11,13)(12,14)(15,16)(17,18,22,20)(19,26,29,32)(21,25,23,31)(24,28,27,30)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,18)(19,24)(20,22)(21,31)(23,25)(26,30)(27,29)(28,32) involution — undirected(9,11)(10,13)(12,16)(14,15)(17,19,22,29)(18,24,20,27)(21,30,23,28)(25,32,31,26)(3,8)(6,7)(11,16)(13,15)(17,20,22,18)(19,27,29,24)(21,25,23,31)(26,30,32,28)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,21,22,23)(18,25,20,31)(19,28,29,30)(24,26,27,32)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.