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