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