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