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