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