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