One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,9,10,16)(4,12,14,7)(6,13,15,11)(22,29)(30,31)(33,34,37,40)(35,41,43,48)(36,44,46,39)(38,45,47,42)(1,3)(2,6)(4,13)(5,10)(7,16)(8,15)(9,12)(11,14)(17,18)(19,22)(20,27)(21,24)(23,28)(25,31)(26,29)(30,32) involution — undirected(17,19)(18,22)(20,25)(21,26)(23,30)(24,29)(27,31)(28,32)(33,35,37,43)(34,38,40,47)(36,45,46,42)(39,48,44,41)(3,10)(6,15)(9,16)(11,13)(17,20,21,28)(18,23,24,27)(19,25,26,32)(22,30,29,31)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.