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