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