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