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