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