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