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