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