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