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