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