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