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