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