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