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