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