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