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