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