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