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