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