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