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