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