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