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