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