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