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