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