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