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