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)(33,34,39,38)(35,42,40,36)(37,45,47,41)(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)(38,42)(39,40)(41,48)(43,47)(44,45) involution — undirected(17,19)(18,22)(20,26)(21,27)(23,29)(24,25)(28,32)(30,31)(33,36)(34,40)(35,38)(37,44)(39,42)(41,46)(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)(33,37,39,47)(34,41,38,45)(35,43,40,46)(36,44,42,48)(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)(38,40)(39,42)(41,43)(45,46)(47,48)(1,6)(2,9)(3,11)(4,12)(5,13)(7,14)(8,15)(10,16)(17,18)(19,22)(20,23)(21,25)(24,27)(26,29)(28,30)(31,32)(33,38,39,34)(35,42,40,36)(37,45,47,41)(43,48,46,44)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.