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