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