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