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