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)(11,15)(12,13)(14,16)(17,18)(19,25)(20,29)(21,24)(22,26)(23,27)(28,32)(30,31)(1,3,5,8)(2,6,4,7)(9,11,14,12)(10,15,16,13)(17,19,24,23)(18,25,21,27)(20,30,22,28)(26,32,29,31)(9,12,14,11)(10,15,16,13)(17,20,24,22)(18,26,21,29)(19,28,23,30)(25,31,27,32)(9,13,14,15)(10,12,16,11)(17,21,24,18)(19,27,23,25)(20,26,22,29)(28,31,30,32)(1,4,5,2)(3,7,8,6)(17,22,24,20)(18,26,21,29)(19,28,23,30)(25,32,27,31)(17,23,24,19)(18,27,21,25)(20,30,22,28)(26,32,29,31)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.