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