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