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