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