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