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