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