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