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