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