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