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