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)(19,25)(20,24)(21,26)(22,23)(27,32)(28,29)(30,31)(33,34)(35,40)(36,42)(37,43)(38,46)(39,41)(44,47)(45,48)(4,11)(7,9)(12,16)(14,15)(17,19)(18,21)(20,28)(22,26)(23,25)(24,32)(27,30)(29,31)(33,35,39,44)(34,40,41,47)(36,45,46,37)(38,43,42,48)(2,3)(7,9)(8,10)(14,15)(18,23)(19,26)(24,31)(27,28)(34,41)(35,44)(36,46)(43,48) involution — undirected(1,3,6,2)(4,9,11,7)(5,10,13,8)(12,15,16,14)(17,19)(18,21)(20,27)(22,26)(23,25)(24,29)(28,30)(31,32)(33,36)(34,42)(35,45)(37,44)(38,41)(39,46)(40,48)(43,47)(1,4)(2,7)(3,9)(5,12)(6,11)(8,14)(10,15)(13,16)(17,20)(18,24)(19,27)(21,29)(22,30)(23,31)(25,32)(26,28)(33,37,39,45)(34,43,41,48)(35,46,44,36)(38,47,42,40)(1,5)(2,8)(3,10)(4,12)(6,13)(7,14)(9,15)(11,16)(17,21)(18,19)(20,29)(22,25)(23,26)(24,27)(28,31)(30,32)(33,38,39,42)(34,36,41,46)(35,43,44,48)(37,40,45,47)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.