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