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