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