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