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)(17,18,24,21,23,27,22,28)(19,29,32,25,20,26,30,31)(1,3)(2,5)(4,8)(6,7)(10,13)(11,15)(17,19)(18,25)(20,23)(21,29)(22,32)(24,30)(26,28)(27,31) involution — undirected(2,6)(5,7)(9,10)(11,14)(12,13)(15,16)(17,20,23,19)(18,26,27,29)(21,31,28,25)(22,32,24,30)(3,8)(5,7)(10,13)(14,16)(17,21,22,18,23,28,24,27)(19,25,30,29,20,31,32,26)(9,11,12,15)(10,14,13,16)(18,27)(19,20)(21,28)(30,32)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.