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