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