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)(17,18,22,28,23,25,21,27)(19,29,30,20,26,31,32,24)(9,10)(11,14)(12,13)(15,16)(17,19,23,26)(18,24,25,20)(21,30,22,32)(27,29,28,31)(1,3,5,4)(2,6,7,8)(10,13)(14,16)(18,25)(20,24)(27,28)(29,31)(1,4,5,3)(2,6,7,8)(10,13)(14,16)(17,20,23,24)(18,26,25,19)(21,29,22,31)(27,30,28,32)(9,11,12,15)(10,14,13,16)(17,21,23,22)(18,27,25,28)(19,30,26,32)(20,31,24,29)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.