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