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