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