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