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