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