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