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