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