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