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