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