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