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