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