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