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