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