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)(11,15,16,13)(17,18,23,27)(19,24,29,32)(20,30,28,25)(21,26,22,31)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19)(18,24)(20,22)(21,28)(23,29)(25,26)(27,32)(30,31) involution — undirected(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,19,21,20,23,29,22,28)(18,25,31,32,27,30,26,24)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,20,21,29,23,28,22,19)(18,24,31,25,27,32,26,30)(2,6)(7,8)(10,14)(13,15)(17,21,23,22)(18,26,27,31)(19,28,29,20)(24,25,32,30)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.