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