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