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