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