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