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