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