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