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