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