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