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