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