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