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