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