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)(19,23,29,34,28,35,41,45)(20,24,31,37,30,36,42,46)(27,33,40,44,39,43,47,48)(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)(25,35)(26,34)(30,39)(31,40)(32,41)(36,43)(37,44)(38,45)(42,47)(46,48)(1,2)(3,6)(4,8)(5,7)(9,10)(11,15)(12,14)(13,16)(17,20,21,31,22,30,32,42)(18,24,26,37,25,36,38,46)(19,27,29,40,28,39,41,47)(23,33,34,44,35,43,45,48)(20,30)(24,36)(27,39)(31,42)(33,43)(37,46)(40,47)(44,48) involution — undirected(2,7)(6,15)(8,12)(9,16)(18,25)(19,28)(24,36)(26,38)(27,39)(29,41)(37,46)(40,47) 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.