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