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