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