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