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