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