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