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