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