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