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