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