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