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