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