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