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