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