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