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