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