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