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