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