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