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