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