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