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)(11,13)(12,14)(15,16)(17,18)(19,29)(20,26)(21,27)(22,28)(23,25)(24,32)(30,43)(31,39)(33,40)(34,41)(35,37)(36,42)(38,45)(44,47)(46,48) involution — undirected(2,5)(6,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,30)(21,35)(22,32)(23,31)(25,37)(26,38)(27,39)(28,29)(33,46)(34,45)(36,44)(40,47)(41,43)(42,48) involution — undirected(11,15)(13,16)(18,25)(21,23)(24,37)(26,40)(27,28)(29,39)(31,35)(33,36)(38,47)(41,42)(43,48)(44,46) involution — undirected(11,15)(13,16)(17,20,22,34)(18,26,28,41)(19,30,32,45)(21,36,23,33)(24,38,29,43)(25,40,27,42)(31,46,35,44)(37,47,39,48)(1,3,4,7)(2,6,5,8)(10,14)(13,16)(17,21,22,23)(18,27,28,25)(19,31,32,35)(20,33,34,36)(24,37,29,39)(26,40,41,42)(30,44,45,46)(38,48,43,47)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.