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