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