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