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