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