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