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