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