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