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