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