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