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