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