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)(17,18)(19,27)(20,25)(21,29)(22,23)(24,28)(26,31)(30,32)(33,34,38,40)(35,39,36,41)(37,42,45,47)(43,46,44,48)(2,7)(3,10)(4,12)(14,16)(18,23)(19,28)(25,32)(26,29)(33,35)(34,39)(36,38)(37,43)(40,41)(42,46)(44,45)(47,48) involution — undirected(3,10)(4,12)(5,8)(9,15)(18,23)(19,28)(20,30)(21,31)(34,40)(35,36)(37,45)(46,48) involution — undirected(1,3,6,10)(2,8,7,5)(4,13,12,11)(9,14,15,16)(17,19)(18,24)(20,26)(21,25)(22,28)(23,27)(29,30)(31,32)(33,36,38,35)(34,41,40,39)(37,43,45,44)(42,46,47,48)(1,4,6,12)(2,9,7,15)(3,11,10,13)(5,14,8,16)(17,20)(18,25)(19,29)(21,27)(22,30)(23,32)(24,31)(26,28)(33,37,38,45)(34,42,40,47)(35,43,36,44)(39,46,41,48)(1,5,6,8)(2,10,7,3)(4,14,12,16)(9,13,15,11)(17,21,22,31)(18,26,23,29)(19,25,28,32)(20,27,30,24)(33,34)(35,39)(36,41)(37,42)(38,40)(43,46)(44,48)(45,47)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.