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