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