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