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