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