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